METHOD OF REMOVING CHLOROORGANIC AND LIGNOSULFONATE COMPOUNDS FROM WASTE WATERS Russian patent published in 1999 - IPC

Abstract RU 2129532 C1

FIELD: waste water treatment. SUBSTANCE: invention relates to treatment of waste waters from pulp-and-paper enterprises which are treated with zinc salts and imidazole or its derivatives in the form of water-insoluble mixed complexes. Method provides 70% removal of chloroorganics (chlorolignins) from bleaching drains and 90% removal of sodium lignosulfonates from their aqueous solutions. EFFECT: increased degree of purification by 20-30%. 3 tbl

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RU 2 129 532 C1

Authors

Serov V.A.

Afanas'Ev N.I.

Brovko O.S.

Zasukhina L.V.

Dates

1999-04-27—Published

1996-12-24—Filed